Improvement in stem-winding watches



J, D. BREZ.

Stem-Winding watches.

Patented July 20,1875.

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, FLPETERS. PHOTWLITHDGHMYHERY WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

JOHN DANIEL BREZ, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN STEM-WINDING WATCHES.

Specification forming part of Letters Patent No. 165,786, dated July 20,1875; application tiled June 23, 1875.

To all whom it may concern: Be it known that l, JOHN DANIEL BREZ, ofBrooklyn, in the county of Kings andV State ot f N eWYork, have inventeda new and useful Improvement in Stem-finding Watches, which improvementis fully set forth in the following specification, reference being hadto the accompanying drawing, in Which`- -v Figure l is a cross-sectionof a watch containing my improvement. Fig. 2 is a front view thereof,partly in section. FiO. 3 is a' sectional view ofthe coupling-piece onan enlarged scale.`

Similar letters indicate corresponding parts.

`My invention relates to certain improvements in stemwinding Watches,and has for one of its objects to admit of removing the movement fromthe watch-case without disturbing the stem, and Without separating theparts of the watch.

My invention consists in the combination of a coupling-piece with thestem, which extends from the crown -piece, and with the winding-arbor ofthe Watch, the 'couplingpiece being arranged in such a manner, withrespect to the Windingarbor, that the coupling-piece partakes of themovement of the crown-piece andthe stem, While it imparts such movementto the Winding-arbor, as hereinafter fully set forth.

ln the drawing, the letter A designates a Watch-ease, which is providedwith a pendant, B, containing the crown-piece O, from which extends thestem D. The crown-piece C is held in place by a screw, a, (one or more,)passing through the side of the pendant B, and catching in an annulargroove, b, formed in the shank of the crown-piece in the usual manner,the whole being so arranged that the crown-piece is adapted to turn, inorder to ad mit of Winding up the watch, as hereinafter explained, andthat the crown-piece is capable of an up-anddoWn movement, being made toform a pusher, and to release the spring F, that confines the frontplate of the Watchbase. G designates a winding-arbor, which is conibinedwith an inner case, H, containing the Works or watchmovement, the arborG being made to project in order that it may be connected with theWinding' mechanism, composed of the stem D and the crown-piece. Thearbor G is connected with the stem D by means of a coupling-piece, l,which is so constructed and connected to the Winding-arbor G and thestem D that by turning the crown-piece O its movement is transmit-tedthrough the stem D and the coupling-piece to the Winding-arbor G, and bythis means the Watch may be Wound up. rlhev coupling-piece I, in thepresent example, has the form of a barrel, Which embraces loosely thestem D and the Windingarbor, but said coupling-piece may be made in anyother form or shape. The lower end of the coupling piece l rests on thecasespring F, which is provided with a suitable aperture for the passageofthe arbor G, While the lower terminus ofthe crown-piece C abutsagainst the upper end of the coupling-piece, so that when thecrown-piece is depressed the spring partakes oi' its depression throughthe coupling-piece l, and thus the spring is released.

When it is desired to remove the case H containing the movement from theWatchcase A it is only necessary to free it from the rim ofthewatch-case, when the Windingarbor G may be readily disengaged from thecoupling-piece, and it follows that the Watch-move ment may be takenout.

rlhe coupling-piece I is held in place When the Watch-movement isremoved by the casespring F, when a case-spring is used, as inhunting-Watches. In Watches having an open face, and in which acase-spring is not commonly used, the coupling-piece l may be held inplace by other means-as, for instance, the rim of the Watch-case A mayform an abutment for the coupling-piece, in Which case the rim isprovided with an aperture of sufficient diameter to admit the stem D,but at the same time to prevent dropping out of the couplingpiece.

To replace the Watchmovement in the case A, the Windingarbor G isinserted in the coupling-piece I, whereupon the Watch-movement may beplaced in the proper position Without disturbing the crownpiece, thestem, or the pendant B.

By arranging the couplin g-piece loosely with relation to the stem D ithas a slight play in a lateral direction, and thus no difficulty islencountered in connecting the arbor G with it.

To further faeiiitate the introduction of the winding-arbor in placingthe Wateirinovenieut in the ease A, the lower end of the coupling pieceI is beveled within, as at d. The arbor G can thus be held at an angleto the coupling-piece I in the act of introducing it Without danger ofinjuring :my of the parts.

In stein-Winding Watches, its heretofore oonstructed, the crown-piecemust be removed before the wateh-movement een be got out of the ease,the crown-piece being freed by taking out the screw which attaches it tothe pendant. rIhis defect is obviated by my invention, inasmuch as thecrown-piece remains undisturbed in removing the Watch-movement, While atthe same time the several parts remain complete, und t firm connectionof the Winding parts is effected.

That I elztiln as new, and desire to secure J. D. BREZ. [L. s]Witnesses:

W. HAUFF, GHAs. WAHLERS.

